Recent comments in /f/history
wattatime t1_ivxhgju wrote
Reply to comment by mrgtiguy in NASA leaders recently viewed footage of an underwater dive off the East coast of Florida, and they confirm it depicts an artifact from the space shuttle Challenger by marketrent
Studied this in a business class as an example of leadership making a poor decision. The engineers didn’t want to sign off on it and the pressure to lunch on that day led to a poor decision by leadership.
SquiffSquiff t1_ivxhbkb wrote
Reply to comment by Spaceguy5 in NASA leaders recently viewed footage of an underwater dive off the East coast of Florida, and they confirm it depicts an artifact from the space shuttle Challenger by marketrent
The point being that NASA could transport entire Saturn V rocket stages (by barge) and the shuttle orbiter (by plane) but for some reason there was 'no way' these boosters could be made in a single piece...
TomtheBombadilly t1_ivxgq3x wrote
Reply to comment by BasurarusaB in What was the societal role of polytheistic Mediterranean religions and their priests? by bhejda
Perhaps that’s where we get into the weeds: where morality is closely tied to culture and vice versa. Perhaps (this is a big perhaps with a capital “P”) what separated Greco-Roman religion from the monotheistic religions was the relatively universal nature of the latter. It’s cross-cultural applicability. As someone else has commented, one idea could be that of universal human dignity (the “made in the image of God” thing). Again, I think morality as a human idea is culturally embedded and can’t be untied from culture. The Greco-Romans were moral as much as they were social. You can’t be social without having rules (hence morality). Christianity’s contribution to morality (and PERHAPS social and cultural interaction) was its universality (incorporating non-Jews and Jews within a single spiritual and embodied community).
Serve-Punk t1_ivxfgq3 wrote
Reply to comment by edric_o in What was the societal role of polytheistic Mediterranean religions and their priests? by bhejda
That's what monotheism says too
Spaceguy5 t1_ivxea9z wrote
Reply to comment by SquiffSquiff in NASA leaders recently viewed footage of an underwater dive off the East coast of Florida, and they confirm it depicts an artifact from the space shuttle Challenger by marketrent
Can you not? Cut it out with the conspiracy crap. As someone who works on the space program, I'm tired of hearing all the anti NASA peanut gallery comments that just assume some weird political corruption is going on behind the scenes, and that that is the only reason the architecture was planned how it was. It's very far removed from reality but yet that conspiracy garbage is something me and my coworkers get spammed with practically every time we talk about work on social media.
Also you should read that r/science comment you linked as a source more closely because it mentions practical reasons why segmenting makes sense and actually supports what I said moreso than you.
[deleted] t1_ivxdwv8 wrote
SquiffSquiff t1_ivxdrlv wrote
Reply to comment by Spaceguy5 in NASA leaders recently viewed footage of an underwater dive off the East coast of Florida, and they confirm it depicts an artifact from the space shuttle Challenger by marketrent
Perfectly possible to make them that size, as discussed e.g. Here. It was because they wanted to manufacture them in Utah for I'm sure entirely sound technical reasons that had nothing whatsoever to do with politics
Tiny-Bus-3820 t1_ivxdm4w wrote
Reply to comment by ImOnlyHereCauseGME in Bookclub Wednesday! by AutoModerator
Like you, I am interested in the Battle of Teutoburg Forest. Here is two recommendations: The Battle that Stopped Rome by Peter Wells and Give Me Back My Legions: A Novel of Ancient Rome by Harry Turtledove. Wells offers a good overview, while Turtledove offers an an interesting fictional look at the relationship between Varus and Arminius that was so pivotal in Rome’s greatest defeat. Also Turtledove’s book is NOT part of a historical fiction series so you are not required to buy a ton of books. Hope you enjoy the books!!
92894952620273749383 t1_ivxd6qs wrote
Reply to comment by 3percentinvisible in NASA leaders recently viewed footage of an underwater dive off the East coast of Florida, and they confirm it depicts an artifact from the space shuttle Challenger by marketrent
I'm glad they found it.
I just wish they change the tone. Its not right to present it in that format. Someone more articulate than me could probably describe it better.
xSociety t1_ivxc3wh wrote
Reply to comment by Zhrimpy in NASA leaders recently viewed footage of an underwater dive off the East coast of Florida, and they confirm it depicts an artifact from the space shuttle Challenger by marketrent
Tell us you're 13 years old without telling us.
3percentinvisible t1_ivxalf8 wrote
Reply to comment by 92894952620273749383 in NASA leaders recently viewed footage of an underwater dive off the East coast of Florida, and they confirm it depicts an artifact from the space shuttle Challenger by marketrent
It's because the divers were filming that episode when they discovered the piece
[deleted] t1_ivxagyr wrote
[deleted] t1_ivxa8u1 wrote
Spaceguy5 t1_ivx9lvs wrote
Reply to comment by ExecutiveAvenger in NASA leaders recently viewed footage of an underwater dive off the East coast of Florida, and they confirm it depicts an artifact from the space shuttle Challenger by marketrent
I mean, redundancy and fault tolerance aren't absolutely mandatory for a design to be good, as long as it's a simple design used in design operating conditions with a low chance of failing. SRBs flown pre-STS-51L in design temps didn't have signs of burn through, only ones flown cold showed signs (which the fact those flown out of spec showed signs even before 51L should have set off alarm bells and gotten the situation resolved without loss of life)
But yes, it definitely was made a better design by adding that fault tolerance, and without adding too terribly much mass and complexity. And it makes sense that they'd add it in after experiencing that failure mode (even if it was caused by out of spec operation) just to give more peace of mind.
isanameaname t1_ivx9d88 wrote
Reply to comment by Spaceguy5 in NASA leaders recently viewed footage of an underwater dive off the East coast of Florida, and they confirm it depicts an artifact from the space shuttle Challenger by marketrent
They had been partially failing since early testing but that partial failure was deemed acceptable because they failed in a way which was thought to be within acceptable levels of risk:
https://en.wikipedia.org/wiki/Space_Shuttle_Challenger_disaster?wprov=sfla1
Fun fact: it wasn't.
> Evaluations of the proposed SRB design in the early 1970s and field joint testing showed that the wide tolerances between the mated parts allowed the O-rings to be extruded from their seats rather than compressed. This extrusion was judged to be acceptable by NASA and Morton Thiokol despite concerns of NASA's engineers. A 1977 test showed that up to .052 inches (1.3 mm) of joint rotation occurred during the simulated internal pressure of a launch. Joint rotation, which occurred when the tang and clevis bent away from each other, reduced the pressure on the O-rings which weakened their seals and made it possible for combustion gases to erode the O-rings.
ExecutiveAvenger t1_ivx90fo wrote
Reply to comment by Spaceguy5 in NASA leaders recently viewed footage of an underwater dive off the East coast of Florida, and they confirm it depicts an artifact from the space shuttle Challenger by marketrent
There certainly was also a design error with the joints since there really wasn't any redundancy. The new design solved this.
edric_o t1_ivx8cfn wrote
Reply to comment by Netroth in What was the societal role of polytheistic Mediterranean religions and their priests? by bhejda
Or proof of the precise opposite, because their laws would count as extremely cruel by our standards.
One of the new ideas that Christianity introduced to the Mediterranean world was the idea of a common humanity, the idea that there are some rules that should apply to all people. Granted, these rules were very bare-bones things like "murder is bad no matter who you're murdering", but the point is that polytheists didn't think that murdering barbarians was morally problematic. In fact, murdering barbarians was heroic. Caesar brags about how many civilians he killed in Gaul - it was considered praiseworthy, and Roman generals almost certainly exaggerated their death toll to make themselves seem more glorious.
Today, modern propaganda is all about denying your atrocities, not exaggerating them. That is moral progress, even though atrocities still happen.
[deleted] t1_ivx69hc wrote
Pihkal1987 t1_ivx63au wrote
Reply to comment by raidriar889 in NASA leaders recently viewed footage of an underwater dive off the East coast of Florida, and they confirm it depicts an artifact from the space shuttle Challenger by marketrent
Because it was a known and reported on malfunction ahead of time. Probably why people take cause with the verbiage.
Netroth t1_ivx4ujs wrote
Reply to comment by edric_o in What was the societal role of polytheistic Mediterranean religions and their priests? by bhejda
Which is proof that religion need not be involved in the making of law at all.
Zhrimpy t1_ivx2fii wrote
Reply to NASA leaders recently viewed footage of an underwater dive off the East coast of Florida, and they confirm it depicts an artifact from the space shuttle Challenger by marketrent
Trash…in the water? Who cares? Pick it out and shut up.
Spaceguy5 t1_ivx0fes wrote
Reply to comment by 92894952620273749383 in NASA leaders recently viewed footage of an underwater dive off the East coast of Florida, and they confirm it depicts an artifact from the space shuttle Challenger by marketrent
They need O-rings to seal the joints because the SRBs of that massive size are made by stacking multiple segments together and you need to be able to seal the hot gasses inside between the joints. There's no practical way to make SRBs that big without splitting them into segments
It wouldn't have been an issue if they used them at the correct temperatures. Though to be extra safe, they also redesigned the joints to be more robust and have a second layer after the failure. That redesign + more strict rules on launch temperatures led to there never being another issue with that part of the booster.
raidriar889 t1_ivwzysr wrote
Reply to comment by fantasmoofrcc in NASA leaders recently viewed footage of an underwater dive off the East coast of Florida, and they confirm it depicts an artifact from the space shuttle Challenger by marketrent
I don’t see why the phrase “major malfunction” doesn’t perfectly describe what happened to the o-rings. Those are the exact word they used on the live TV broadcast.
chaosg0hd t1_ivxhopc wrote
Reply to What was the societal role of polytheistic Mediterranean religions and their priests? by bhejda
in my opinion, polytheism allows for more options to enact something, eg do this to appease that, also maybe possibly, for cross-cultural/tribal dialogue, what if the various deities were patron deities of specific groups and unifying them under one pantheon would make sense